^
Yeah, lots of shows in Europe are playback (Top of the Pops comes to mind). Muse were definitely protesting/taking the piss by them all switching band roles for it.
I can't imagine APC did a 5 song mini-concert that was all playback (they continued to play songs after the taping). That doesn't even seem plausible.
*edit, not to turn this into the Muse thread, but they always do outrageous things when forced to lip synch, or even when they were told not to swear (they didn't even have any songs with bad words at the time), Matt decided to change most words in the second verse to fuck. No wonder why some shows only allow playback heh.